Air purifier



FIG. 1 is a perspective view of an air purifier showing the new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a partial perspective view thereof, showing the air purifierin a state of use.

The evenly spaced broken lines and unshaded areas depict portions of theair purifier that form no part of the claimed design. The dot dash dotbroken line in FIG. 8 denotes the boundary of the partial view and formsno part of the claimed design.

CLAIM We claim the ornamental design for an air purifier, as shown anddescribed.